AJAX Webforms and PHP

[Nate1]

USing the code below can I create a system for filling a drop down box in ASP I have done this in PHP, but with webforms there are alot of tags by default, in PHP i would return just the <option>? tags. Im thinking that I need to approx this differently in ASP (VB)


function createRequestObject() {
var ro;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
ro = new ActiveXObject("Microsoft.XMLHTTP");
}else{
ro = new XMLHttpRequest();
}
return ro;
}

var http = createRequestObject();


function sndReq(Loc) {
http.open('get','Page.aspx';
http.onreadystatechange = handleResponse;
http.send(null);
}

function handleResponse() {
if(http.readyState == 4){

}
}